The film tells the passionate story of Yun Feiyang, a "soldier king" of the public security border guards, who was shot and fell into the water and lost his memory while arresting a cross-border drug lord. He had to flee to a foreign country to survive. After his comrades' persistent search, he finally returned to the embrace of his motherland, fought side by side with his comrades, and finally caught the drug lord in one fell swoop.